Negative Refractive Index in a Four-Level Atomic System

ZhANG Hong-Jun; GONG Shang-Qing; NIU Yue-Ping; LI Ru Xin; XU Zhi-Zhan

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Negative Refractive Index in a Four-Level Atomic System

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@@ We propose a scheme for realizing negative refractive index in a four-level atomic system. It is shown that such a system can simultaneously exhibit negative permittivity and negative permeability in an optical frequency range.Furthermore, by analysing the dispersion property of the left-handed material, we find that the probe beam can be controlled from superluminal to subluminal or vice versa via choosing appropriate parameters.

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《中国物理快报：英文版》 |2006年第7期|1769-1772|共4页
作者
ZhANG Hong-Jun; GONG Shang-Qing; NIU Yue-Ping; LI Ru Xin; XU Zhi-Zhan;
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State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800;

Graduate School of Chinese Academy of Sciences, Beijing 100049;

School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062;

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800;

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800;

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800;

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800;

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正文语种 chi
中图分类物理学;
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Negative Refractive Index in a Four-Level Atomic System

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